Japan's geothermal power generation reserves comes to 23.47 million kilowatts, which is the third largest in the world.

However, to date there are only 18 geothermal power plants in Japan. The electricity generated from these plants accounted for just 0.2 percent of Japan's 2010 electricity.

Source: Yomiuri Shinbun

The number of gang members and their associates in Japan has dropped to around 70,300, which is the lowest level since 1992.

Source: Kyodo News

QS World University Rankings, 2011/12

1. University of Cambridge
2. Harvard University
3. MIT
4. Yale University
5. Oxford
6. Imperial College London
7. University College London
8. University of Chicago
9. University of Pennsylvania
10. Columbia University